This driver used to be provided in 3.0.21 kernel modules, then was in staging with 3.2.10, but has now been included with 3.8.13. Loading " wireless-3.8.13-tinycore " extension should provide the needed rtl8187 driver. You might also need firmware-rtlwifi extension to provide the firmware.

To summarize, load both

wireless-3.8.13-tinycore.tczfirmware-rtlwifi.tcz

good luck

Note: I found some confusion in the location of this device driver, however in tc-5.x is found in wireless-3.8.13-tinycore.tcz